Hi all,   We have recently purchased a plot of land with two existing blockwork structures on (previously stable blocks but more like garages) which we are converting into a single dwelling. The two existing structures are simple in their construction, blockwork walls, concrete slab floors and corrugated roofing. Due to costs we aim to retain and modify the structures (insert new openings for windows/insulate/new roofs etc) and create a new glazed link between the two. I am u